But if you have custom headers that you want a client in a browser to be able to see, you need to add them to your CORS configurations ([CORS (Cross-Origin Resource Sharing)](cors.md)) using the parameter `expose_headers` documented in [Starlette's CORS docs](https://www.starlette.dev/middleware/#corsmiddleware).

///

## Build logic organisation

The Elasticsearch project contains 3 build-related projects that are included into the Elasticsearch build as a [composite build](https://docs.gradle.org/current/userguide/composite_builds.html).

### `build-conventions`

This project contains build conventions that are applied to all elasticsearch projects.

### `build-tools`

///

/// note | Технические детали

Любая функция, с которой можно корректно использовать:

* [`@contextlib.contextmanager`](https://docs.python.org/3/library/contextlib.html#contextlib.contextmanager) или
* [`@contextlib.asynccontextmanager`](https://docs.python.org/3/library/contextlib.html#contextlib.asynccontextmanager)

будет корректной для использования в качестве зависимости **FastAPI**.

## Snapshots and Documentation

Snapshots of Guava built from the `master` branch are available through Maven
using version `999.0.0-HEAD-jre-SNAPSHOT`, or `999.0.0-HEAD-android-SNAPSHOT`
for the Android flavor.

[Snapshot API Javadoc][guava-snapshot-api-docs] as well as

            userSettingsFile = resolveFile(userSettingsFile, workingDirectory);

            if (!userSettingsFile.isFile()) {
                throw new FileNotFoundException("The specified user settings file does not exist: " + userSettingsFile);
            }
        } else {
            userSettingsFile = DEFAULT_USER_SETTINGS_FILE;
        }

        File projectSettingsFile;

With Java serialization, even minor changes to a class (like adding a field) can break compatibility.

- **Cross-Language Compatibility:**
Java serialization is inherently Java-centric and does not support cross-language scenarios well.

- **Type Safety:**
Java serialization does not enforce type safety as strictly as some alternatives, potentially leading to runtime errors.

## Decision

We do not use Java serialization.

on:
  # For Branch-Protection check. Only the default branch is supported. See
  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection
  branch_protection_rule:
  # To guarantee Maintained check is occasionally updated. See
  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained
  schedule:
    - cron: '45 9 * * 0'
  push:
    branches: [ "master" ]

## Die Dokumentation testen { #check-the-docs }

Sie können dies in der Dokumentations-UI unter `/docs` testen:

<div class="screenshot">
<img src="/img/tutorial/request-form-models/image01.png">
</div>

## Zusätzliche Formularfelder verbieten { #forbid-extra-form-fields }

FastAPI extrait les données pour chaque champ à partir des paramètres de requête de la requête et vous fournit le modèle Pydantic que vous avez défini.

## Consulter les documents { #check-the-docs }

Vous pouvez voir les paramètres de requête dans l'interface des documents à `/docs` :

<div class="screenshot">
<img src="/img/tutorial/query-param-models/image01.png">
</div>

**FastAPI** va **extraire** les données pour **chaque champ** à partir des **données de formulaire** de la requête et vous fournir le modèle Pydantic que vous avez défini.

## Consulter les documents { #check-the-docs }

Vous pouvez le vérifier dans l'interface des documents à `/docs` :

<div class="screenshot">
<img src="/img/tutorial/request-form-models/image01.png">
</div>

## Interdire les champs de formulaire supplémentaires { #forbid-extra-form-fields }